Priming cup for internal-combustion engines



Dec. 19,- 1922.

I 1,439,015. E. MINGE.

PRIMING CUP FOR INTERNAL COMBUSTION ENGINES. FILED vac. I6, 1920.

W flak/$190016 ll aten d "l9, i922.

a rae, ea -a i i ll E a warm n p ll itl EINAR IVHNGE, OF CHICAGO, ILLINOIS.

Application filed December 16, 1920. Serial No. 431,161.

To all 107mm it may concern Be it known that l, EINAR Mince, a former subject of the King of Norway, who has toresworn his allegiance to said King of Norway and declared his intention of becoming a citizen of the United States, and a resident or the city oi lllk'ttgO, county of Cook, and State of Illinois, have invented certain new and useful Tn'iproveinents in Priming Cups for Internal-Combustion Engines, oi which the following is a specification.

My invention relates to improvements in priming cups for internal combustion engines, and more particularly to the means for priming the same, the object oi the in vention being to provide a simple and con venient means for priming and facilitating the starting and operation of internal combustion engines.

Uther objects will appear hereinafter.

The invention consists in the combinations and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings "forming a part of this specification, and in which,

Fig. 1 is a side view of a priming cup embodying the invention,

I. 2, a vertical section of the same,

Fig. 3, a view similar toFig. 1 but showing the valve open,

Fig. 4, a detail section oi? a valve stem head en'iployed in the constructimi,

5, a section through the head oil? an internal combustion engine cylinder show ing the priming cup in position of use.

Fig. 5, a view of aslightly modified torm oi valve stem.

The preferred form of construction, as

illustrated in Figs. 1 to 53 inclusive, comprises a priming cup 7 having a threaded stem 8 adapted and arranged to be threaded in a suitable threaded opening leading into the engine cylinder 9, as indicated. The engine cylinder 9 is equipped with the usual piston 10 and connected with the usual connecting rod 11, as indicated. The priming cup 7 is provided with a central bore or passage leading centrally from the bottom thereof through the stem 8 and into the cylinder 9 and a hollow valve stem 12 is arranged in said passage and projects upwardly into said cup. The lower end oi? the valve stem 12 is closed by valve head 13 seated on the valve valve stem into the cylinder when the valve is open, as indicated in Fig. 3.

In operation, the priming cup 1s secured in the head of the cylinder, substantially as indicated in F and is supplied with a priming charge o't gasoline or the like. Upon the suction stroke of the piston 10, the valve 13 will be automatically opened by said suction and the priming charge of gas oline mixed with air drawn into the cylinder. Upon the compression stroke of the piston 10, the valve 13 will be automatically closed by the combined action of the spring .15 and. the compression within the cylinder.

Thus a rich priming mixture will be automatically drawn into the cylinder thus greatly facilitating the starting of the engine. During the normal running of the engine, the valve 13 will open at each suc- 'tion stroke of the piston, thus admitting a small quantity of fresh air which will aid the normal operation of the engine.

in the modified form of valve stem, illustrated in Fig. 6. the valve stein 12 provided with one or more loijigitudinal slots 1'7 positioned at the bottom oil? the cup I and with a. slightly dif erent form of opening 18 at its inner end. By this arrangement, some ot the priming Chili 1 of gasoline will pass into the. hollow interior oi the stem 12 thus mixing with the air passing into said hollow stem and thus tending to provide a more perfect explosive mixture. Otherwise the construction and operation is the same as that already described.

While I have illustrated and described the preferred form of: construction for carrying my invention into eiiect, this is capable of variation and modification without depar ing from the spirit or the invention. T, therefore, do not wish to be limited to the precise details of construction forth, but desire to avail inyselfoilt such variations and modifications as come within the scope of the appended claims.

Having described my invention, what I yielding stem for the admission of air into said cylinder; a'valve seating formed on the inner end of said valve stem normally closing the passage between said cup andcylinder; substantially as described.

2. In a priming cup, the combination of a stern having a passage leading from said cup into the cylinder oi an internal cornbustion engine; a hollow valve stem arranged in said passage adapted to move downwardly upon a suction stroke of the piston of said cylinder, there being a T shaped opening adjacent the inner end of said valve and an elongated slot above said T shaped opening for the admission of air into said cylinder when said valve is moved downwardly; and a valve seat formed on the inner end of said valve stem normally closing the passage between said cup and cylinder, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribingwitnesses.

EINAR MINGE.

Witnesses FREDA C. APrLn'roN,

W. H. Dn ,BUSK. 

